Grain-door.



D, DARWN.

GRAIN Doon. APYLIUATION FILED JULY 272, 1911. EENEWED JAN.17,1U13.

1,068,327@ Patented July 22, 1913.

2 IIEBTB-SHEET 2.

' donf; openings and across the top of the car.V

unirsi) STATES' PATENT onirica.

DAVID DAWIN, 0F IRON RIVER, WISCONSIN.

GRAIN-DUUR.

Specification of Letters Patent.

Patented July e2, 1913.

piaciuti man my as, un, serial 1w. 639,943. Renewed January 17, 1913. 'summum-15.

To ait whom t may cancel/'n .t

Be it known that. I, Davin- Di'nwm', a citiien of the United States, residing at Iron River, in the county of Bayfield and State of Wisconsin, have invented new and'usefnl Im 4nwements in Grain-hours, cf which the fol owing is a Specification.

AThe present invention provides a door for closing the opening in the side of a box car designed chiey for hauling grain, fertilizer and like commodity in bulk, the purpose beingthe provision of a door which may be readily 'moved aside when it is required to unload the 'car thereby avoiding'the coxnmon practice of, destroying grain doors when unloading the grain.

A The invention contemplates a sectional door, 'novel ymounting's therefor and protective vmeans for preventing injury to the door jambe, said protective means supporting antifriction rollers which enable the door to be easily moved.

The invention consists of the novel features, details of construction andcombination fof parts, whichilereinafter will be more particu arly setf'orth, illustrated in the accnnpanyin drawings, and pointed out in the a pen ed claims. y

Re vrrin to the drawings, forming a part of the specification, Figure 1 isa transverse Section 'of a grain caf provided with grain doors embodying the invention, the full lines showing the doors in position for closin the 'door' openings and the dotted lines in icating the position of the doors when elevated or moved diit ofthe way. Fig. 2 is a horizontal section. Fig, 3 is a view of the grain doer asfseen from the inner side, showing a portion of a side of the car, parts being broken away. Fi r. 4 is a vertical section of the door. Fig. 5 1s a 'view of one of the sections of .the door. Fig. 6 is a horizontal section of a modification. Fig. 7 is a detail sec` tion on the line 7 7 of Fig. 6, looking in the direction of the arrows. Fig. 8 is a sectional l detail on the line 8-8 of Fig. 6,' looking to the right, as indicated by the arrows. Fig. 9 is a horizontal section of a further modification.

to linl the following descrlption, and indi- `same referencccharacters.

Guides 1 of substantially U form in cross Section extend along opposite sides of the Corresponding and like parts are referred.

.cated in .all theviews of the drawings, by the The open sides of the guides face inward toward ,the door opening and the vert-ical portions of said guides are attached to the inner faces of the door jambs 9. The upper portions of the guides extending beneath the roof ofthe car overlap, thereby admitting of the doors whenA moved out of the Way occupying a position one above the other. A depression or drop 13 is formed in the guides at the angle between the vertical and horizontal portions for the purpose of engaging the projections of the doors to hold the latter suspended. -The guides lpreferably consist of metal bars which may be formed in any manner. 4

Each of the doors comprises similar sections 3 and 3, each of the sections consisting of sheet metal of suitable length and width. Portions are pressed from the sections of the door to form ribs for stiiiening and strengthof the door jambs, thereby preventing waste of grain or other commodity stored in the car. left plain, as indicated at 5,`to ride uponl the antifriction wheels 7 located in the door jambs and designed to relieve friction and cause the doors to slide freely in theirvertical movements. f The door sections are strengthened at their upper `and lower ed by rods 2, which are fitted thereto, belng preferably inserted in'rolls' formed by bending edge portions of the sheet metal plates. The rods project a short distance' beyond the flanged ends of the door sections to enter the guides 1. A curved Hangs 12 is formed at the lower edgeof the upper door section 3 to engage over the upper rod provided at the u'pper edge of the lower door section `to insure the formation of a tight joint between door opening.

Each 'doorjam is protected by :means of a plate 6 of L-form, one Wing of the plate covering the sideV .of `the door j amb facing the door openingaand the other Wing protecting the side of the door jamb facing the,

interior of the car. Openings are formed at intervals in the Wing of the protective plate facing the interior of the car toadmit of portions of the antifriction Wheels 7 pro'- jecting to engage end portions of the doors. Brackets or strap 8 assist in supporting the antifriction wheels- 7 and are attached to End portions of the door sections areV vhold the same in closed position.

the wings of the protective plates 6. A

.guard 1l protects the guide and consists of a metal strip bent into substantially an ogee form between its longitudinal edges, one edge of the guard being secured to the guide and the other edge being attached to the inner face or wall of the side of the car. A catch 14'is provided upon each door jamb and is adapted to engage over the doorrsr to he catches have both pivotal and adjustable connection with the door jambs and are longitudinally slotted to receive the pivot fastenings.

From the foregoing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the, invention appertains, and whilel I have described the principle of operation. of the invention, together with the device which I now consider to be the embodiment thereof,'I desire to have it understood that the device shown is merely illustrative, and that such changes may be made when desired as are within the scope of theclaims appended hereto.

Figs. 6, 7 and 8 show a modified ,form of catch which is mounted to receive both a pivotal and a sliding movement. The catch. B is pivoted to a slide Awhich is mounted on the door jamb to move vertically. A spring C of the contractile type normally exerts la downward pull uponv the'slide A to hold the catch B in engagement withthe rod 2. The slide is mounted within the door jamb and has'a. projecting portion to which the catch B is pivoted. In the event of the door jamb beingof wood the latterl is-cut away upon aside to receive the slide A and the protector' has a slot in which the projecting portion of the slide is arranged to operate.

Fig. 9 shows a modification in which the door jamb is formed as a part of a side of the car, particularly when the latteris constructed of plate steel. In this case the antifriction wheels 7 are mounted directly upon the door jamb, portions of the latter having openings to admit of the antifriction wheels projecting so as to come in contact with the door.

Having thus described the invention what is claimed as new, is

l. In a grain car having jambs at opposite sides of the door opening and having the sides of said jambs facing the door opening and the interior of the car covered by means of plates, said jambs being further provided upon their inner sides with grooves,

U shaped guides secured to the inner faces of the jambs, a sheet metal door having its vertical edge portions bent to provide anges arranged to operate in the grooves formed in the inne-r faces of the door jambs, andr'ods secured to the upper and lower ends ofthe door and projecting beyond the flanged edges thereof to enter the said U shaped guides. y

2. In a grain car having jambs at opposite sides of the door opening, protecting strips of metal covering the sides of said jambs facing the door opening and the in- A terior of the car, antifriction wheels mounted upon the -protecting strips' and having portions extending beyond the fianges of said strips facing the inte-rior of the car, and a sliding door mounted to move upon said jambs. A

y 3. In a grain car having jambs at opposite sides of the door opening,metal guides of U form secured to the inner sides of said jambs, protecting strips of metal covering the sides of said jambs facing the door opening, antifriction wheels mounted upon the lprotecting strips, a door slidably mounted in the guides and adapted to engage the antifriction wheels, and guards consisting of metal strips bent between their longitudinal edges 'and having an edge portion of y each secured to one of the guides and having the opposite edge portion attached to the inner side of the car.

-In testimony whereof I aiiX my signature in presence of two witnesses.

, DAVID DARWIN.

Witnesses:

W. H. NETTLETON, EDWARD CAMPBELL. 

